Abstract: A human propulsion vehicle with at least two wheels (3, 5) comprising a first frame (1), handlebars (4) rotatably mounted onto the first frame (1) and connected to at least one wheel (3), a second frame (8) integrally connected to the first frame (1) at the front portion thereof and above said handlebars (4), and a seat (6) and a seat back (7) for the person is provided, the vehicle being characterized in that it further comprises a pair of cranks (10) for driving the propulsion energy with a swinging reciprocating motion around an axis of rotation (100), and a crown (9) connected thereto apted to convert the swinging reciprocating motion of the cranks (10) in a one-way rotary motion around said axis of rotation (100) and the seat back (7) being apt to provide a thrust reaction member for the person when forcing on the cranks (10).